Then plug OUR harness into the vehicle harness (the plug disconnected from the factory radio)

Drive off with your new system. (As easy as 1-2-3 really)

Keep the Warranty of Vehicle: Best of all you didn't have to cut off your car's original radio connector. So when its time to sell or return vehicle, just re-connect the stock radio (No cutting of wire) keeps the manufacture warranty. (Just Unplug, Reconnect factory radio, and use the aftermarket radio for you new car.)